Milwaukee Road class A2
![MILW No. 919.jpg](/w/images/thumb/d/d2/MILW_No._919.jpg/300px-MILW_No._919.jpg) |
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Specifications |
Configuration |
4-4-2 |
UIC class |
2′B1′ v4 |
Gauge |
4 ft 8 1⁄2 in (1,435 mm) |
Driver diameter |
84–85 in (2,134–2,159 mm) |
Boiler pressure |
200–220 lbf/in2 (1.38–1.52 MPa) |
Cylinders |
4 (Vauclain compound) |
High-pressure
cylinder size |
15 in × 28 in (381 mm × 711 mm) |
Low-pressure
cylinder size |
25 in × 28 in (635 mm × 711 mm) |
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|
Career |
Operators |
Milwaukee Road |
Class |
A2, A2-a, A2-b, A2-c, A2 |
Number in class |
47 |
Scrapped |
1927–1930 |
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The Milwaukee Road's A2 class comprised 47 compound steam locomotives of the 4-4-2 or 'Atlantic' configuration. The Milwaukee Road acquired them in five batches.
The first two batches of 9 and 19 locomotives (classes A2 and A2-a) were built by Baldwin Locomotive Works, and were Vauclain compound locomotives with 84 inches (2.13 m) drivers. The third batch (A2-b) of five locomotive was built by the Milwaukee Road in its Milwaukee, Wisconsin shops with 85 inches (2.159 m) drivers. The fourth batch (A2-c) of 12 engines was built by Baldwin as Vauclain compounds with 85 inches (2.159 m) drivers, while the last batch (A2) was for a pair of engines built by Baldwin as balanced compounds. All members of the class were scrapped between 1927-30
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References
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